# SDR GTIA2026012239253

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 21, 2026
- Submitted: January 22, 2026
- Operation: Air carrier
- Aircraft: [N970NK](https://openairdocs.org/aircraft/N970NK), registered now
- Make and model: Airbus A320-271N
- Registry model: [Airbus A320-271N](https://openairdocs.org/model/airbus-a320-271n) (OpenAirDocs)
- Aircraft serial: 11067
- Aircraft time: 11,375 hours, 4,897 cycles
- System (JASC): [2150 · Cabin Cooling System](https://openairdocs.org/jasc/2150)
- Part: A/C Pack
- Condition: Odor
- Location: Nr 1
- Stage of operation: AP
- How discovered: O
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/GTIA2026012239253

## Discrepancy

AT 6000 MSL ON APPROACH, FLAPS 1, 210 KTS.,  SMELLED A BITTER, ACID, OILY SMELL IN THE COCKPIT. TURNING OFF PACK 1 IMPROVED THE AIR QUALITY. F/A DID NOT SMELL ANYTHING ABNORMAL. DIFFERENTIAL PRESSURE 2.9 PSI -PER GMM 30.40 ODOR EVENT STAGE 1. APPLIED TSM 05-50-810-831-A DECISION TABLE POINTS TO CORRECTIVE ACTION TYPE 1, LEVEL OF ODOR IS B. APU INSPECTION REQ SEE L/P 6010517-2. DECANTAMINATION LEVEL B REQ. SEE L/P 6010518-1

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